Machine for operating on shoes



Jan. 7, 1941. BRANDT 2,227,568

MACHINE FOR OPERATING 0N SHOES Filed March 15, 1940 2 Sheets-Sheet 1 Jan. 7, 1941. BRANDT 2,227,568

MACHINE FOR OPERATING ON SHOES Filed March 15, 1940 2 Sheets-Sheet 2 Patented Jan. 7, 1941 UNITED STATES PATENT GFFICE.

MACHINE FOR OPERATING ON SHOES Jersey Application March 1.5, 1940, Serial No. 324,159

11 Claims. (01. 12.-51)

This invention relates to shoe machinery and is illustrated as embodied in a machine comprising trimming mechanism and stapling mechanism cooperatively related to function simultaneously or to utilize the trimming mechanism alone, as the usermay elect.

One of the routine operations in the manufacture of welt shoes, known as upper-trimming, follows the toe-lasting operation to prepare the shoes for the welting operation. The lasted materials at the toe are secured temporarily by a toe-wire and two anchoring tacks, but elsewhere they are held by lasting staples. After the lasted materials at the toe have dried and set, the toe-wire and the two anchoring tacks may be removed, staples may be driven to replace them as means for temporarily securing the lasted materials to the rib of the insole, and the lasting margins may be trimmed, all before the inseam is sewn. According to present practice, this stapling operation and trimming operation are separate and distinct, two individual machines are required to perform them, and each shoe must be handled once for each operation and transferred from one machine to the other.

An object of the present invention is to provide a combined trimming and stapling machine by which both of these operations may be performed at once, to save time and eliminate one handling of each shoe.

Accordingly, the illustrated machine comprises an upper-trimming mechanism and a stapling mechanism cooperatively related, one element common to both mechanisms being a member that controls the closeness of trimming and at the same time provides an anvil to brace the rib of the insole against the thrust of the ingoing staples.

Preferably, the trimming mechanism is of a type that feeds the work, and because of its feeding effect it will space successive staples one from another so long as the operation of the stapling mechanism is not interrupted. Nevertheless, the illustrated machine is organized to provide for s5 interrupted or uninterrupted operation of the stapling mechanism without interruption of the trimming mechanism. The machine is provided with a treadle mechanism by which the user may start and stop the stapling mechanism at will, while the trimming mechanism continues in operation. This provides for driving one or more staples wherever the user considers them necessary.

Referring to the drawings:

Fig. 1 is a side elevation of a combined trimming and stapling machine organized as above outlined;

Fig. 2 is a bottom plan of the trimming and stapling instrumentalities; and

Fig. 3 is a top plan of the toe portion of a 5 shoe into whichv a staple is driven, the stapled materials appearing in section.

The machine herein illustrated comprises stapling mechanism of the type shown and described in United States Letters Patent No. 2,078,999, 0 granted May l, 1937, on application of B. B. Blanchard and trimming mechanism of the type shown and described in United States Letters Patent No. 1,513,002, granted October 28, 1924, on application of A. M. Picken, but for purposes 15 of coordinating these mechanisms to cooperate with each other and to perform their respective functions, some of the elements are slightly altered in shape or size without altering their principles of operation. 20

A lasted shoe of the type under consideration comprises an insole H] and an upper H on a last l2. The lasting margin l3 of the upper is secured to the rib M of the insole with staples l5 except around the toe, where it may be secured temporarily with a toe-wire and anchoring tacks (not shown) until the trimming and stapling operations herein described are about to be performed, when they may be removed. The lasting margin I?! usually projects so far beyond 30 the rib M (Fig. 1) that the trimming operation herein described is necessary to provide clearance for one or more parts of the stitch-forming mechanism of a welting machine to be used later.

In the drawings the several layers usually com- 35 prised in the upper are represented as merged into one composite layer to avoid confusion, and for the same reason the rib M of the insole is represented as a single layer. The staples l5 are those usually inserted in the side-lasting oper- 40 ation to secure the margin H to the rib i 4.

As shown in Fig. l, the surplus material of the lasting margin I3 is in process of being trimmed by a pair of cooperative shearing cut ters each consisting of a circular disk having a 45 peripheral cutting edge i3 and peripheral teeth or ribs l9 that indent the work enough to insure feeding it as the disks rotate in opposite directions. The disks are secured to rotary spindles 2B, 211 provided with intermeshing pinions 2|, 2i at their upper ends. These spindles are iournaled in a stationary bearing-block 22. Rotation is imparted to one of the spindles by pinions 23 and 24, the latter being affixed to a shaft 25 that may be driven continuously by a belt 26 running 55 on a pulley 21 and on a power-operated driving pulley (not shown). The shaft 25 is journaled in a stationary bracket 28 affixed to an overhanging arm of a frame 29. The latter is mounted on a floor column 30.

One of the cutting disks is secured to its spindle 26 by a screw-stud having a head 3| slightly longer than the depth of the insole-rib M. The lower end of this head is arranged to be engaged by the insole It! to control the closeness of trimming; the periphery of the head is engaged by the inner surface of the rib l4 and thus guides the shoe; the head is in register with a stapling nozzle 32 (hereinafter described) and not only braces the staple-receiving materials against the thrust of ingoing staples but may also serve as an anvil against which the ingoing staples may be clenched. For the latter purpose the periphery of the head is provided with a narrow encircling groove 33 in register with the path of the staples, the bottom of this groove being the actual anvil surface by which the ends of the staples may be clenched as shown in Fig. 3 in which a clenched staple is indicated at 35.

The other cutting disk is also secured to its spindle 29 by a screw 34, but the head of this screw is countersunk in the cutting disk (dotted lines in Fig. 1) to clear the nozzle 32.

The stapling mechanism is mounted in a movable frame 36 and this frame is superposed on the stationary frame and connected thereto by a pivot pin 31. As in the construction shown in the above-mentioned Patent No. 2,078,999, the movable frame 36 is formed to straddle a portion of the stationary frame where the pivot pin connects them, the pin extending through spaced cheeks of the movable frame and through the intermediate portion of the stationary frame. To brace the movable frame against sidewise displacement its cheeks are provided with contact screws 38 that abut opposite faces of the stationary frame and slide thereon.

The location of the pivot pin 3! enables the nozzle 32 to move lengthwise toward and from the anvil 3| with movements little longer than necessary to release the staple-receiving materials after each staple is driven. Moreover, the distribution of the mass supported by the pin 31 is such that the force of gravity tends constantly to shift the nozzle toward the anvil. This force may be supplemented by that of a compression spring 39 arranged to act in opposite directions against portions of the two frames.

The to-and-fro movements of the frame 36 about the pin 31 are produced by a power-driven cam 40 with which a stationary supporting roll 4| cooperates. A depression in this can permits the frame 36 to move far enough to shift the nozzle 32 into contact with the lasting margin l3 at the instant when a staple is being driven, but the cam immediately retracts the nozzle to clear that margin.

The cam 49 is formed on the hub of the driven member of a well-known type of roller clutch (Horton clutch) the roller cage of which is spring-biased by a trigger 42 to set the clutch in operation. The driving member of the clutch is a pulley 43. A belt 44 transmits rotation to it from a continuously rotating pulley 45 secured to the shaft 25. The driven clutch member is affixed to a cam shaft 46 journaled in bearings in the frame 36.

The starting and stopping of the clutch is controlled by a spring-biased bell-crank lever 41 one end of which, part 48, is movable to and from the path of the trigger 42. This bell-crank lever is connected to the frame 28 by a fulcrum pin 49. A treadle (not shown) is provided to operate the lever 41, the treadle connections comprising a treadle-rod 50, a bell-crank lever and a link 52. Depressing the treadle-rod trips the clutch to drive the shaft 46 until the part 48 is returned to its stopping position (Fig. 1) in which it disconnects the clutch members and arrests the driven member.

Staples are made of wire 54 supplied by a reel 55 and drawn around a spring-biased take-up roll 56, both supported by a bracket 51 afiixed to the frame 29. The wire 54 is fed step by step through a guide 58 (Fig. 2) by an oscillating feedroll 59 and a gripping roll 60 and travels thence through a flexible tubular guide 6| to power-operated staple-forming mechanism. A power-operated cutter 62 is arranged to cut the wire whenever a staple is to be formed and driven. The wire to be severed lies between an inside former 63 and an outside former 64 both of which derive their operation from the cam shaft 46. A staple-driver 65, also operated by the cam shaft, slides in a guideway in the outside former and thereafter in a similar guideway 66 in the nozzle 32.

The cutter 62 is affixed to a block 61, the latter is afiixed to a bracket 68, the bracket is adjustably secured to a slide 69, the slide has bearings in a guideway in the frame 36, and the slide is advanced by a'roll at the outer end of an arm 1|. The arm is connected to the frame 36 by a fulcrum pin 12 and carries a cam-roll 13 to which operating motion is imparted by a cam 14 keyed on the shaft 46. A finger formed on the arm H operates a spring-biased lever 76 on which the gripping roll 68 is mounted and by which it is periodically retracted to release the wire 54 while the feed-roll 59 is turning backward. A compression spring ll (Fig. 1) nested in a groove in the frame 36 returns the slide 69 and maintains the roll 13 against the cam 14.

The outside former 64 receives its operating motion from the slide 69 in which it is nested with provision for enough lost motion to enable the cutter 62 to sever a length of staple-wire before the shoulders 18 of the slide strike and advance the outside former. A light compression spring 19 seated against the outside former and the slide 69 cause the former to clamp the wire against the inside former 63 during thesevering operation, after which the outside former bends the wire around the inside former to form the staple. Then the inside former is retracted from the path of the staple and the latter is driven ahead through the nozzle 32 and into the work.

The staple-driver 65 is secured to a bar 80 arranged to slide in a guiding channel in the slide 69. A link 8| connects this bar with an operating lever 82 mounted on the fulcrum pin 12. A grasshopper spring 83 normally retracts the driver bar, but the driving motion is derived from a roll 84 mounted on an arm 85 carried by the cam 14 and mortised into a face of the latter with provision for adjustment to regulate the range of motion imparted to the lever 82. The motions are so timed that the nozzle 32 advances to the work at the instant when a staple is being driven, and both the nozzle and the staple-driver are retracted immediately thereafter to leave the work free for feeding and trimming.

Having described the invention, what I claim as new and desire to secure by Letters Patent of the United States is:

cal

1. A machine for operating on lasted welt shoes comprising power-operated cutting mechanism arranged to sever surplus upper material projecting from the insole of a lasted shoe, and power-operated mechanism arranged to drive staples through the lasting margin and into the rib of the insole, said cutting mechanism including a work-guiding member arranged to engage the insole to control the closeness of trimming, and to engage the rib of the insole in register with said staple-driving mechanism to brace the staple-receiving materials against the thrust of the ingoing staples.

2. A machine for operating on lasted welt shoes comprising cutting mechanism arranged to trim progressively surplus upper material projecting from the insole of a lasted shoe, powerdriven means for operating said cutting mechanism continuously, an element of said cutting mechanism being arranged to guide the shoe by engagement with the insole and with the inner surface of the rib thereof, mechanism arranged to drive staples successively through the lasting margin and into said rib in register with said guiding element, power-driven means arranged to operate said staple-driving mechanism, and manually controllable means for starting and stopping said staple-driving mechanism at will.

3. A machine for operating on last-ed welt shoes comprising rotary power-driven cutting means arranged to sever surplus upper material projecting from the insole of a lasted shoe, an abutment projecting from said cutting means to control the closeness of trimming by engagement with the insole and to guide the shoe by engagement with the rib of the insole, and power-operated mechanism arranged to drive staples in register with said abutment to secure the margin of the upper to said rib.

4. A machine as specified in claim 3 comprising manually controllable means for starting and stopping said staple-driving mechanism without interrupting the operation of said cutting means.

5. A machine for operating on lasted welt shoes comprising an anvil arranged to be engaged by the insole of a lasted shoe and by the rib of the insole, a staple-guiding nozzle movable toward and from said. anvil, power-driven means arranged to shift said nozzle toward and from said anvil, power-driven means arranged to drive staples through said nozzle and into said rib in register with said anvil, and power-driven cutting means arranged to sever surplus upper material projecting from the insole between said anvil and said nozzle.

6. A machine for operating on lasted welt shoes comprising a power-driven member rotatable about a fixed axis, a disk secured thereto and provided with a peripheral cutting edge arranged to sever surplus upper material projecting from the insole of a lasted shoe, a securing member by which said disk is fastened to said power-driven member, said securing member being arranged to be engaged by the insole and by the rib thereof, a member with which said disk cooperates to produce a shearing cut, and power-operated mechanism arranged to drive staples through the lasting margin of the upper and into the rib of the insole in register with said securing member.

'7. A machine as specified in claim 6 in which said securing member is provided with a stapleclenching surface in register with the ingoing staples.

8. A machine for operating on lasted welt shoes comprising a stapling anvil arranged to be engaged by the insole of a lasted shoe and by the rib of the insole, a stapling nozzle, stapleforming mechanism, means for feeding staple- Wire to said mechanism, power-operated mechanism arranged to drive staples through said nozzle in register with said anvil, and power-operated cutting means arranged to sever surplus upper material projecting from the insole of a lasted shoe of which the insole rib and the lasting margin of the upper are between said anvil and said nozzle.

9. A machine for operating on lasted welt shoes comprising a stationary frame, a movable frame supported thereby, power-driven cutting means mounted on said stationary frame to sever surplus upper material projecting from the insole of a lasted shoe, an abutment projecting from said cutting means to brace the inner sur face of the rib of the insole, a stapling nozzle and power-operated staple-driving mechanism both carried by said movable frame, and poweroperated means by which said movable frame is moved to and fro to advance and retract the nozzle, said staple-driving mechanism and said nozzle being arranged to cooperate with said abutment.

10. A machine for operating upon a lasted shoe the insole of which has a sewing rib and the upper of which has a lasting margin adjacent to the rib, said machine comprising mechanism for trimming surplus material from the lasting margin, and mechanism for driving staples through the trimmed margin into the rib.

11. A machine for operating upon a lasted shoe the insole of which has a sewing rib and the upper of which has a lasting margin adjacent to the rib, said machine comprising mechanism for trimming surplus material from the lasting margin, and mechanism for driving staples through the trimmed margin into the rib, said mechanism including a member common to both which facilitates guiding the shoe.

FRANCIS L. BRANDT. 

